Jerry told you how to do it for VBA UDF's. I believe you can in an XLL
although I have never built one, but Laurent Longre implies that it is
possible to do it directly in an XLL. XLL construction is covered in the
Excel Software Developer's kit, but that has been discontinued back around
xl97 I believe (or perhaps earlier). I believe the documentation is on
MSDN.

--
Regards,
Tom Ogilvy
"Bryan" <bryan@nospam wrote in message
...
Thanks for that information Tom. I was able to add some help text for the
function, however I could not see where I add it for the method arguments.
Is that possible for XLA functions? What about for XLL functions?

Kind regards,
Bryan


"Tom Ogilvy" wrote in message
...
with your workbook loaded, select it in the object browser as the
library,
then select your function in the right window of the object browser,
right
click on it and select properties. Put you text there.

--
Regards,
Tom Ogilvy


"Bryan" <bryan@nospam wrote in message
...

I am trying to create an Add-in with a library of functions, i.e.
Add(num1,
num2) that can be used in my excel workbooks. I am able to do this
successfully, however I can not find any resources on Microsoft's site
on
how to add the help text to the formula dialog that pops up. For
example,
when you hit the formula button and select the formula function "Sum",
there
is some help text that tells you what the function does: "Adds all the
numbers in a range of cells" as well as what it is expecting in the
parameter: "number1, number2, ... are 1 to 30 numbers to sum. Logical
values
and text are ignored in cells, included if typed as arguments."

Can anyone tell me how my add-in functions can add this text to my
custom
functions? Are there any Microsoft KB articles that covers this?

Thanks,
Bryan